Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (8): 2683.doi: 10.7503/cjcu20210060

• Materials Chemistry • Previous Articles     Next Articles

Trehalose-modified Poly(vinyl alcohol) and Their Antifogging/Antifrosting Coatings

BAI Jingqi1, BAI Shan1, REN Lixia1, ZHU Kongying1,2, ZHAO Yunhui1, LI Xiaohui1, YUAN Xiaoyan1()   

  1. 1.School of Materials Science and Engineering,Tianjin Key Laboratory of Composite and Functional Materials,Tianjin University,Tianjin 300350,China
    2.Analysis and Measurement Center,Tianjin University,Tianjin 300072,China
  • Received:2021-01-24 Online:2021-08-10 Published:2021-08-05
  • Contact: YUAN Xiaoyan E-mail:yuanxy@tju.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(51773150)

Abstract:

Trehalose-grafted poly(vinyl alcohol)(PVA-g-Tre) was synthesized from carboxylated trehalose and poly(vinyl alcohol)(PVA), and the hydrophilic semi-interpenetrating polymer network antifogging/ antifrosting coatings were further prepared from the trehalose-modified polymer with ethylene glycol dimethacrylate via photoinitiated polymerization. The chemical structure of PVA-g-Tre was characterized by proton nuclear magnetic resonance and Fourier transform infrared spectroscopy. The roughness and wettability of the coating surface as well as hydrogen bonding between water and the polymer were analyzed by atomic force microscopy, water contact angle and Raman spectroscopy, respectively. The transmittance, antifogging and antifrosting properties of the coatings were measured. Results showed that the prepared coatings containing PVA-g-Tre with different trehalose-grafting ratios had low surface roughness with high transmittance. Compared with the PVA coating, the PVA-g-Tre coatings exhibited excellent antifogging and antifrosting properties due to the enhanced hydrophilicity and wettability by introduction of trehalose.

Key words: Poly(vinyl alcohol), Trehalose, Grafted modification, Antifogging coating, Antifrosting coating

CLC Number: 

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